The folowing table expresses '30' in various number bases. 'DR_{x}' shows the result of 'digit reducing' resulting in an X-digit long number.

Base | DR_{5} | DR_{4} | DR_{3} | DR_{2} | DR_{1} |
---|---|---|---|---|---|

2 | 11110 | 100 | 1 | ||

3 | 1010 | 2 | |||

4 | 132 | 12 | 3 | ||

5 | 110 | 2 | |||

6 | 50 | 5 | |||

7 | 42 | 6 | |||

8 | 36,11 | 2 | |||

9 | 33 | 6 | |||

10 | 30 | 3 | |||

11 | 28 | A | |||

12 | 26 | 8 | |||

13 | 24 | 6 | |||

14 | 22 | 4 | |||

15 | 20 | 2 | |||

16 | 1E | F |

Factors: 2 * 3 * 5

30 is the number of edges in a Dodecahedron.

30 is the number of edges in a Icosahedron.

A 'Triacontagon' is a 'regular polygon' with 30 sides.

30 is the atomic weight of Zinc (Zn).

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